Authentic Vintage Terra Sancta Guild Clean Air Land + Water Enamel Pendant

Authentic Vintage/Antique Terra Sancta Guild Pendant, unknown metal w/ enamel detail— open circular design incorporating the words “CLEAN AIR LAND+WATER” with a blue enamel fish, white enamel dove, and a green enamel plant (total Hippie Vibes) and an incorporated bail at the top, approx. 1 5/8” diameter, 1/8” thick, stamped on back w/ guild mark, copyright mark ©, “1970” (year made), “ISRAEL” and “PAT PENDING”, currently on a vintage brown suede cord, approx. 26” max length, can be tied or cut for a shorter worn length, or removed and put on an alternative cord or chain. As this pendant is over 50 years old, I have not attempted to clean it. It does have some normal wear, but is in excellent condition for its age and has no significant or noticeable flaws or damage, but it is a bit dirty, and could possibly have the enamel and even the underlying metal cleaned, BUT… it currently has a great 50+ year patina and looks great as is, so I’m not messing with it. Any Qs just ask. Thanks!